B. MESSIRDI, A. SENOUSSAOUI On the L$^{2}-$ boundness and L$^{2}-$ compactness of Fourier integral operators (49K, LaTeX 2e ) ABSTRACT. In this paper, we study the $L^{2}$-continuity and $L^{2}$% -boundness of Fourier integral operators. These operators are bounded respectively compacts if the weight symbol is bounded respectively tends to $0$.